[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240203002343.383056-1-seanjc@google.com>
Date: Fri, 2 Feb 2024 16:23:39 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Jim Mattson <jmattson@...gle.com>, Mingwei Zhang <mizhang@...gle.com>
Subject: [PATCH v2 0/4] KVM: x86/mmu: Clean up indirect_shadow_pages usage
Resurrect a 6 month old patch from Mingwei, add a few cleanps on top, and
fix a largely theoretical race between emulating writes and write-protecting
shadow pages. At least, I'm pretty sure there's a race. Memory ordering
isn't exactly my strong suit.
v2:
- Drop the unnecessary READ_ONCE(). [Jim]
- Cleanup more old crud in reexecute_instruction().
- Fix the aforementioned race.
v1: https://lore.kernel.org/all/20230605004334.1930091-1-mizhang@google.com
Mingwei Zhang (1):
KVM: x86/mmu: Don't acquire mmu_lock when using indirect_shadow_pages
as a heuristic
Sean Christopherson (3):
KVM: x86: Drop dedicated logic for direct MMUs in
reexecute_instruction()
KVM: x86: Drop superfluous check on direct MMU vs. WRITE_PF_TO_SP flag
KVM: x86/mmu: Fix a *very* theoretical race in kvm_mmu_track_write()
arch/x86/kvm/mmu/mmu.c | 19 ++++++++++++++++---
arch/x86/kvm/x86.c | 35 ++++++++++++++---------------------
2 files changed, 30 insertions(+), 24 deletions(-)
base-commit: 60eedcfceda9db46f1b333e5e1aa9359793f04fb
--
2.43.0.594.gd9cf4e227d-goog
Powered by blists - more mailing lists